Explicitly-correlated double ionization potentials and double electron attachment equation-of-motion coupled cluster methodsстатья
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Дата последнего поиска статьи во внешних источниках: 24 апреля 2018 г.
Аннотация:Double ionization and double electron attachment equation-of-motion methods, based on linearly approximated explicitly correlated coupled-cluster singles and doubles [CCSD(F12)] are formulated and implemented. An extension of double electron attachment operator is introduced for proper account of short-range correlation effects in states with two additional electrons. Numerical tests for set of doubly ionized and doubly electron attached states of several molecules have shown a good agreement between obtained explicitly-correlated results and the corresponding complete basis set limit values already at double-f level.